Sökning: "Radio transmission"
Visar resultat 1 - 5 av 170 avhandlingar innehållade orden Radio transmission.
1. Culture and Transmission : The Technological and Cultural Reach of International Syndicated Radio
Sammanfattning : The aim of this dissertation is to study the technological and cultural reach of internationally syndicated radio from the vantage point of the radio programme Solid Steel between 2000 and 2006. Solid Steel is a weekly two-hour music show originally produced and aired in London but today also broadcast by a large number of stations around the world, as well as via the Internet. LÄS MER
2. Cognitive Radio Networks : Elements and Architectures
Sammanfattning : As mobility and computing becomes ever more pervasive in society and business, the non-optimal use of radio resources has created many new challenges for telecommunication operators. Usage patterns of modern wireless handheld devices, such as smartphones and surfboards, have indicated that the signaling traffic generated is many times larger than at a traditional laptop. LÄS MER
3. Uplink Load in CDMA Cellular Radio Systems
Sammanfattning : The uplink of code division multiple access (CDMA) cellular radio systems is often interference limited. The interference originates from many users whose transmission powers are not observable for the system. LÄS MER
4. Coordinated Transmission for Wireless Interference Networks
Sammanfattning : Wireless interference networks refer to communication systems in which multiple source–destination pairs share the same transmission medium, and each source’s transmission interferes with the reception at non-intended destinations. Optimizing the transmission of each source–destination pair is interrelated with that of the other pairs, and characterizing the performance limits of these networks is a challenging task. LÄS MER
5. Model-Based Cognitive Radio Strategies
Sammanfattning : Many frequency bands for wireless services are severely underutilized by the primary users (PU) to which these bands are assigned. This motivates a new class of wireless communication devices known as cognitive radios (CR), which identify vacant spectrum and transmit accordingly. LÄS MER